There wasn't an island event and there was pleanty of food. I initially thought it was part of the program and part of the last puzzle. I waited for hours after the gc died but the gc didn't come back as a super gc, the last puzzle didn't get solved, no rescue ship, nothing. I've restarted since then (neglected the village for a couple of days and came back to dead bodies ). I guess if the next gc starts getting weak I'll try to heal it.